-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-drupal7-14.0-jessie-amd64-xen.tar.bz2.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-drupal7-14.0-jessie-amd64-xen.tar.bz2 4d54c073dee3f2303b18465c1a5bb0d6 $ sha1sum turnkey-drupal7-14.0-jessie-amd64-xen.tar.bz2 e3bcf9a168b4b16bfef83b4f4f17375a8cdb9dc2 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiAAAoJEIXCXpWhbrlNv1wH/RpoNKlllp6tsJ2BPcJIodzk yAMX2rpungxysVHNM9tTW1vo03iw29U9p7zVXKnytt3UcKvorrZObaTnVtDLqHnV 0GaMhp6Vzl4vObFLyJZnkgK96U9C2dWo61G5faBy0ODeyhcH8RRVu9rjwjAS65mg ZPZhS8LsYSB2R/XEl9PnJfkezkiNzzSN+KOKGEh8r1WsXfqDiMETFCBXyeWkfdGt OGKse+TZ3tN4EWxF67jgmoCBhMBQMgiaBrXVVc75His6SaCmBXZqk1XhCdG8A1w6 N+CC0SoUU6zKikJcIX8Oj90kt7YA1DCrGHNa5ZXVTz7eMCKK9Un3uXFYsEMR3pE= =RCyH -----END PGP SIGNATURE-----